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Efficient Pyrazolo[5,4-f]quinoxaline Functionalized Os(II) Based Emitter with an Electroluminescence Peak Maximum at 811 nm.
Zhu, Ze-Lin; Wang, Sheng-Fu; Fu, Li-Wen; Tan, Ji-Hua; Cao, Chen; Yuan, Yi; Yiu, Shek-Man; Zhang, Ye-Xin; Chi, Yun; Lee, Chun-Sing.
Affiliation
  • Zhu ZL; Center of Super-Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Wang SF; Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Fu LW; Department of Chemistry, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan.
  • Tan JH; Department of Chemistry, Frontier Research Center on Fundamental and Applied Sciences of Matters, National Tsing Hua University, Hsinchu, 30013, Taiwan.
  • Cao C; Center of Super-Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Yuan Y; Center of Super-Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Yiu SM; Department of Materials Science and Engineering, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Zhang YX; Center of Super-Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China.
  • Chi Y; Suzhou Joysun Advanced Materials Co., Ltd., Unit B, Building 12, No. 200, Xingpu Road, Suzhou Industrial Park, Suzhou, 215000, P. R. China.
  • Lee CS; Center of Super-Diamond and Advanced Films (COSDAF), Department of Chemistry, City University of Hong Kong, Hong Kong SAR, P. R. China.
Chemistry ; 28(4): e202103202, 2022 Jan 19.
Article in En | MEDLINE | ID: mdl-34811829
ABSTRACT
Upon fusing the pyrazinyl pyrazole entity in giving pyrazolo[3,4-f]quinoxaline chelate, the corresponding Os(II) based NIR emitter exhibited "invisible" and efficient electroluminescence with a peak maximum at 811 nm. A maximum external quantum efficiency of 0.97 % and a suppressed efficiency roll-off till a current density of 300 mA cm-2 was also exhibited.
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Chemistry Journal subject: QUIMICA Year: 2022 Type: Article
Fulltext
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PubMed Links
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Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Chemistry Journal subject: QUIMICA Year: 2022 Type: Article